Interview Questions and Answers for 'Accenture india' | Search Interview Question - javasearch.buggybread.com
Javasearch.buggybread.com

Search Interview Questions


 More than 3000 questions in repository.
 There are more than 900 unanswered questions.
Click here and help us by providing the answer.
 Have a video suggestion.
Click Correct / Improve and please let us know.
Label / Company      Label / Company / Text

   



Interview Questions and Answers - Order By Newest

   next 30
 Q31. What are some different logging levels for log4j ?Log4j
Admin
info@buggybread.com
Ans. DEBUG
ERROR
ALL
WARN
INFO
FATAL
OFF
TRACE
TRACE_INT
WARN

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     java   log4j   log4j level   logging   error logging     Asked in 10 Companies


  Q32. What is a self Join and give an example of a self Join ?

or

What is self Join and What is it's purpose ?
Database2016-06-30 20:13:35

Ans. When a Table Join itself , it's a Self Join. For example - we like to know the pair of department names where first dept has lesser employees than the later.

Select D1.name , D2.name from Dept D1, Dept D2 where D1.employee_count < D2.employee_count

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     sql  joins  self join  self-join  Pair of employee names with first having lesser salary than later  Pair of department names where first dept has lesser employees than the later     Asked in 26 Companies      basic        frequent


  Q33. What is the difference between authentication and authorization ?Authentication2017-01-23 12:56:23

Ans. Authentication is the process of verifying the identity and credentials of the user to authenticate him into the system.

whereas

Authorization is the process by which access to a segment , method or resource is determined.

Authorization is usually a step next to authentication.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     authentication  authorization  authentication vs authorization     Asked in 9 Companies      basic        frequent


 Q34. How can we ensure thread safety in static method ?Core Java2017-08-27 07:49:53

Ans. By using synchronized static method or synchronized block

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     threads  synchronization  static methods     Asked in 2 Companies      intermediate


  Q35. What are the types of authentication used in Web services ?Web Service2018-07-14 11:02:27

Ans. Encrypted User Name / Password
Encrypted Password within Cookie
Encrypted Tokens
IP
Client Certificates
Oauth

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     authentication  security  web service     Asked in 12 Companies      basic        frequent


  Q36. What is a cookie ?Java EE
admin
info@buggybread.com
Ans. A cookie is a small piece of text stored on a user's computer by the browser for a specific domain. Commonly used for authentication, storing site preferences, and server session identification.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     cookie   javascript   web application   session management   browser   j2ee     Asked in 16 Companies      basic        frequent


Frequently asked at HCL Technologies ( Based on 3 feedback )
  Q37. Difference between Checked and Unchecked exceptions ?Core Java
Anonymous
Ans. Checked exceptions are the exceptions for which compiler throws an errors if they are not checked whereas unchecked exceptions are caught during run time only and hence can't be checked.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     java   exceptions   checked exceptions   unchecked exceptions   exception handling   basic interview question     Asked in 38 Companies      basic        frequent

Try 1 Question(s) Test


Frequently asked.
  Q38. What is an Iterator?Core Java
Anonymous
Ans. Iterator is an interface that provides methods to iterate over any Collection.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     java   collections   iterator     Asked in 11 Companies      basic        frequent


 Q39. What are transient variables in java?Core Java
Anonymous
Ans. Transient variables are variable that cannot be serialized.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     java   serialization   transient     Asked in 15 Companies      intermediate        rare


  Q40. Advantage of Collection classes over Arrays ?Core Java
Admin
info@buggybread.com
Ans. Collections are re-sizable in nature. We can increase or decrease the size as per recruitment.
Collections can hold both homogeneous and heterogeneous data's.
Every collection follows some standard data structures.
Collection provides many useful built in methods for traversing,sorting and search.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     java   collections   collections classes   advantages of collections over arrays   collections vs arrays   basic interview question     Asked in 6 Companies      basic        frequent


  Q41. What is the use of HashCode in objects ?Core Java
Admin
info@buggybread.com
Ans. Hashcode is used for bucketing in Hash implementations like HashMap, HashTable, HashSet etc.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     java   string   hashcode   hash code   string comparison  hashtable     Asked in 17 Companies      basic        frequent


 Q42. What are different types of second level cache ?Hibernate
Admin
info@buggybread.com
Ans. 1. EHCache ( Easy Hibernate )
2. OSCache ( Open Symphony )
3. Swarm Cache ( JBoss )
4. Tree Cache ( JBoss )

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     hibernate   orm   hibernate cache   technical lead     Asked in 7 Companies


 Q43. What is Criteria in Hibernate ?Hibernate
Admin
info@buggybread.com
Ans. Criteria is a simplified API for retrieving entities by composing Criterion objects.

For example - session.createCriteria(Employee.class).add( Restrictions.like("name", "A%") ).list();

will return all employee objects having name starting with A.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     hibernate   hibernate criteria     Asked in 7 Companies      Basic        Frequent

Try 1 Question(s) Test


  Q44. Which Software Development methodology is being used in your current Job ?General
Admin
info@buggybread.com
Ans. We are using Agile methodology. I attend daily stand up where the development leads takes the status of assigned stories, achievements, any bottlenecks or challenges. We follow iteration of 2 weeks.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     sdlc   agile methodology   software system analyst   software developer interview   development lead   project lead interview     Asked in 14 Companies        frequent


  Q45. Difference between jar , war and ear ?Java EE
Admin
info@buggybread.com
Ans. Jar is Java Archieve i.e compressed Class or Class / Java files.

War comprises of compressed Servlet class files,JSP FIles,supporting files, GIF and HTML files.

Ear comprise of compressed Java and web module files ( was files ).

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     java   j2ee   jar   web development   war   ear   build management   release management     Asked in 12 Companies      basic        frequent


 Q46. Which of the collections allows null as the key ?

a. HashTable
b. HashMap
c. TreeMap
d. LinkedHashMap
Core Java
Anonymous
Ans. HashMap

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     java   collections   map  hashtable     Asked in 2 Companies      basic        frequent


  Q47. How are values passed in Java ? By value or reference ?Core Java

Ans. Java only provides pass by value.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     ebay   pass by value   pass by reference   method call   methods   functions   function call     Asked in 10 Companies      basic        frequent


Must know at all levels. Among Top 10 frequently asked questions in Java. Very frequently asked to fresh graduates or less experienced professionals.
  Q48. What is Inheritance ?Core Java

Ans. Its a facility for code reuse and independent extension wherein a derived class inherits the properties of parent class.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     inheritance  object oriented programming (oops)  oops concepts  oops concepts  java concepts  code reuse  code re-use   classes  derived classes     Asked in 14 Companies      basic        frequent


Very frequently asked to fresh graduates. Frequently asked in NSEiT and Accenture India
 Q49. Write a program to Generate prime numbers till a given numberCore Java

Ans. public class Main {
public static void main(String args[]) {
int number = 2;
int count = 0;
long sum = 0;
int givenNumber = 1000;
while (count < givenNumber) {
if (isPrimeNumber(number)) {
sum = number;
count;
}
number;
}
System.out.println(sum);
}
private static boolean isPrimeNumber(int number) {
for (int i = 2; i <= number / 2; i) {
if (number % i == 0) {
return false;
}
}
return true;
}
}

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     generate prime numbers  code  coding     Asked in 5 Companies      basic        frequent


 Q50. What are the benefits of Enums ?Core Java2016-09-07 09:05:01

Ans. Enums in Java are used to declare predefined objects and then reuse them. they offer many benefits

1. Enum instance are type safe and thread safe.

2. Enum instances are singleton and hence reused.

3. If we use Enums with Switch , It makes sure that the passed argument is either of its instance and hence provides a safeguard.

4. If we use Enum with Sorted Collections we can sort the elements with a predefined priorities ( as per constant declaration in enum )

5. We can use Enum as a Factory by defining its constructor.

6. We can store related constant data within enum. For example - If we know the values for the map upfront, we can alternatively use an enum.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve          Asked in 6 Companies


 Q51. How to delete duplicate elements in a table ?Database2016-12-13 14:58:38

Ans. DELETE FROM TABLE WHERE ROW_NUM NOT IN ( SELECT MAX(ROW_ID) FROM TABLE GROUP BY DUPLICATE_FIELD )

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve          Asked in 3 Companies


  Q52. Difference between Array and ArrayList ?Core Java2016-12-15 14:13:12

Ans. <a href="http://javahungry.blogspot.com/2015/03/difference-between-array-and-arraylist-in-java-example.html" rel="nofollow">http://javahungry.blogspot.com/2015/03/difference-between-array-and-arraylist-in-java-example.html</a>

  Sample Code for ArrayList

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     array  arraylist     Asked in 11 Companies      basic        frequent


 Q53. Difference between Error and Exception ?Core Java2016-12-15 14:13:56

Ans. An Error indicates serious problems that a reasonable application should not try to catch whereas

An Exception indicates conditions that a reasonable application might want to catch.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     error  exception handling  exceptions     Asked in 2 Companies      basic        frequent


Frequently asked in Accenture.
  Q54. What is your biggest achievement at work ?General2016-12-15 14:14:22

Ans. [Open Ended Answer]

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     general question  non technical question     Asked in 20 Companies        frequent


  Q55. What is database Normalization ?Database2017-01-09 12:00:02

Ans. https://en.wikipedia.org/wiki/Database_normalization

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     normalization  database     Asked in 35 Companies      intermediate        frequent


  Q56. What is an exception and exception handling in Java ?Core Java2017-01-09 13:01:40

Ans. An Exception in java is the occurrence during computation that is anomalous and is not expected.

Exception handling is the mechanism which is used to handle such situations.


 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     exception handling     Asked in 18 Companies      basic        frequent


 Q57. What is Amazon S3 ?Amazon Web Services (AWS)2017-02-16 11:17:48

Ans. Amazon Simple Storage Service or S3 is object storage with a simple web service interface to store and retrieve any amount of data from anywhere on the web.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     aws  amazon s3  aws s3  aws storage  amazon cloud storage  amazon s3     Asked in 12 Companies


 Q58. What is the use of constructors in Java ?Core Java2017-04-07 10:13:18

Ans. Constructors are used to initialize the state of an object. If there are no constructor , objects won't have any initialized state and hence it's elements may contain garbage values. If the memory were used as is, the behavior of the object would also be unpredictable.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     constructor     Asked in 5 Companies


 Q59. Write a SQL to delete duplicate records in a tableDatabase2017-04-20 06:42:22

Ans. DELETE FROM TABLE WHERE ROW_NUM NOT IN ( SELECT MAX(ROW_ID) FROM TABLE GROUP BY DUPLICATE_FIELD )

or

DELETE FROM TABLE a WHERE ROW_ID >(SELECT MIN(ROW_ID FROM TABLE b WHERE a.DUPLICATE_FIELD=b.DUPLICATE_FIELD);

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve          Asked in 3 Companies


 Q60. why aren't arrays better than array list ?Core Java2017-05-31 11:42:53

Ans. 1. Arrays don't provide any built in support for sorting searching like operation and we need to do it explicitly.

2. It can hold only homogeneous objects,

3. We have to reserve memory as no dynamic expansion allowed.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     arrays  arraylist  arrays vs arraylist     Asked in 3 Companies


previous 30   next 30

Help us and Others Improve. Please let us know the questions asked in any of your previous interview.

Any input from you will be highly appreciated and It will unlock the application for 10 more requests.

Company Name:
Questions Asked: